resist, reject, refuse -- (resist immunologically the introduction of some foreign tissue or organ; "His body rejected the liver of the donor")
reject, turn down, turn away, refuse -- (refuse entrance or membership; "They turned away hundreds of fans"; "Black people were often rejected by country clubs")
rule out, eliminate, winnow out, reject -- (dismiss from consideration or a contest; "John was ruled out as a possible suspect because he had a strong alibi"; "This possibility can be eliminated from our consideration")